Implement a `create-env` command for stackforms projects

[fhacloid]

Creating an environment with stackforms is not supported by the CLI yet.

Here how we will do it:

The current command will remain with the legacy cy projects create-env logic, but we will put a warning to migrate the command to cy projects create-raw-env.

We will create the cy projects create-stackforms-env that will allow to create env with stackforms.

In about 6 month, we will migrate the old creation command to cy projects create-raw-env and the new command using stackforms to cy projects create-env.

Todo:

• [ ] Create stackforms command to create-stackforms-env
• [ ] Alias the old create-env to create-raw-env
• [ ] Add warning to old command
• [ ] Add tests

[fhacloid]

Re-opening this issue to follow up on the deprecation in 6 month.

[fhacloid]

Deprecation acted on next release.